Improvement in base-burning stoves



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' Base Burning Stove.

No.- 94,223. v Patented Aug. 31, 1869.

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I Be Burning Stove. No. 94,223. Patented Aug. 31, 1869.

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Letters Patent No. 94,223, dated August 31,1869.

' IMPROVEMENT IN BASE-BURNING- STOVES.

The Schedule referred to in these Letters Patent. and making part of the same.

To whom 'it nmy concernr Be it known that I, Mosns W. Lns'rnn, of Chicago, in the county of Cook, and State of. Illinois, have invented a new and useful Improvement in Air-Heating Furnaces; andI do declare that the following isa true and accurate description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, and being a part of this specification, in which- Figure 1 is a vertical section of my improved furnace; I

. Figure 2 is a horizontal section of the same, on the line I x in fig. 1; and

Figure 3 is the same, on the line y y in fig.'1.

Like letters indicate like parts in each figure.

The nature of this invention relates to an improved construction of air-heating furnaces. in which anthracite coal is used as fuel, and consists in so. arranging a series of inclined air-pipes, that they will be exposed on all sides to the action of the flames; in anovel and dura l 'lnpf combined combustion and gas-rings, and in the general arrangement of its parts, as hereinafter more fully shown and set forth.

In the accompanying drawings A, plate 1, represents the open baseof my improved fnrnace,'monnted on proper legs.

B is the ash-pit, and

O, the fire-pot. v

D .is an annular-flanged plate, provided with a flange, d, and studs (1', which project inwardly, and rest upon the edge of thefire-pot, leaving a small space between the flange d and the fire-pot, through which a'sheet of air is supplied to'the surface of the ignited mass of coal in the fire-pot, and thus insures a perfect combustion of the gases thrown ofi.

E is a combustion-ring of heavy cast-metal, forming the lower section of the magazine H, which is sup-' plied with coal through the chute f at its top.

c are wings cast .with and projecting outward from the combustion-ring E, and rest upon the inner edge, of the gas-ring D. r I

G is a cylinder supported by a flange on the outer rim of the'annular plate D, covered by a plate, H, which forms the top'of the smoke-box I, from the centre of which plate the due h rises and carries ofi the unconsumed products of combustion.

' The diaphragm-plate J inthe cylinder- G forms the bottom of the smoke-box, as shown in 'fig. 1, and is perforated with opehings, K, near its periphery, for combustion into the smoke-box.

L are air-pipeswhose lower ends fit over flanged openings hear the periphery of the annular plate D, Y

and passing-up, incline inward and communicate with openings in the diaphragm J, whence the tubes 'M convey the heated air through the smoke-box into the hot-air reservoir 0.

I is the outer shell or casing. Its lower end is flanged into the base A, and its top covered by the covering-plate Q, which also forms the top of the airchamber 0, whence the heated air is conveyed to the desired points by the hot-air fines. q.

By inclining the pipes L, the flame acts on allsides of them on its way to the openings K, and returning toward the flue h in the centre of the smoke-box,

. passes between the tubes M, and thus imparts the greatest possible amount of heat to the air-pipes with a given consumption of fuel. The pipes L being equally exposed on all sides to the action of the heat, will longer resist its destructive effects.

The combustion-ringE is made of heavy cast-iron, to resist the effects of'the great heat to which it is subjected, and by supporting it by the wings e on the inner edge ofthe gasgring, it may expand and contract without attracting the surrounding parts, and is easily roplaced-by another-when necessary.-

R is an evaporatingspan, conveniently placed on the ash-pit in front of the fire-pot. The evaporation of the water contained therein, supplies the requisite amount of hydrogen to the heated air issuing from the chamber 0.

S is a tightly-fitting door, closing an opening, s, in the smoke-box, through which access is had to the smoke-box, for clearing away ashes on the diaphragm, plate J, when necessary.

If the device shown is to be used as a stove, the outer casing P may be made of asingle thickness of sheet-metal, but if no heat is to be radiated therefrom into the apartment in which itis placed, an inner shell is added, with an air-space between them, connecting the space under the base with the reservoir 0. Through this air-chamber the air rises and is heated, adding it quota to the air delivered by the tubes.

What I claim as my invention,.and desire to secure by Letters Patent, is-

1. The inclined air-pipes L and tubes M in connection with the'annnlar plateD, arranged and operating substantially as and for the purposes herein set forth.

2. The annular plate D, provided with flange-d and studs 41', ariangedand operating substantially as described.

3. In anthracite-furnaces, the combustion-ring E, provided with wings e,'in combination withthe annu-' la'r plateD, when arranged and operating for the purpose set forth. v

" MOSESv W. LESTER.

Witnesses: I

H. F. EBERTS, G. W. Snnvoss. 

